PENGOPTIMALAN ISOLASI LINE EKSITASI MENGGUNAKAN HEAT SHRINK DI UNIT 3 PLTA SAGULING
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Almas, Darari
Pasra, Nurmiati
Pasra, Nurmiati
Subject
Teknik Elektro
Datestamp
2020-02-11 08:46:04
Abstract :
Generator is one of the most important part for a Hydro Power Plant (PLTA), so that the performance of the generator can be maximal then the reliability of the excitation generator line system should be considered. To avoid short phase with phase or phasa with generator body, excitation line must have isolation. Isolation in the excitation line is still using the old method of cloth that is wrapped later in the varnish as an insulator, given the fabric of the fabric is now the fabric then the remnants of carbon brust that is eroded into dust can enter through the pores of the fabric and accumulate, this can lead to trips. The insulation resistance on the heat shrink is much greater compared to the insulation resistance on the fabric. Thus, by replacing excitation line insulation using heat shrink will minimize the risk of short between phase and phase or phase with body generator. Measurable insulation resistance of the fabric and the heat shrink can be seen that at minute 10 it has 3000 M? of isolation insulation resistance and heat shrink 4600 M? heat insulation. While from the calculation data, obtained value of minimum insulation resistance generator of 199.39 M?. And by using heat shrink as excitation line isolation will increase the presentation of insulation resistance reach 12,477%..
Generator is one of the most important part for a Hydro Power Plant (PLTA), so that the performance of the generator can be maximal then the reliability of the excitation generator line system should be considered. To avoid short phase with phase or phasa with generator body, excitation line must have isolation. Isolation in the excitation line is still using the old method of cloth that is wrapped later in the varnish as an insulator, given the fabric of the fabric is now the fabric then the remnants of carbon brust that is eroded into dust can enter through the pores of the fabric and accumulate, this can lead to trips. The insulation resistance on the heat shrink is much greater compared to the insulation resistance on the fabric. Thus, by replacing excitation line insulation using heat shrink will minimize the risk of short between phase and phase or phase with body generator. Measurable insulation resistance of the fabric and the heat shrink can be seen that at minute 10 it has 3000 M? of isolation insulation resistance and heat shrink 4600 M? heat insulation. While from the calculation data, obtained value of minimum insulation resistance generator of 199.39 M?. And by using heat shrink as excitation line isolation will increase the presentation of insulation resistance reach 12,477%..
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